Saeety-rack eor window-washers



B. C. CARTER.

SAFETY RACK FOR WINDOW WASHERS.

APPLICATION FILED SEPT- 14. I918.

1,318,479. mama on. 11,1919.

2 SHEETSSHEET l.

awvemtoz wane/30% Ema/07y @2821.

B. C. CARTER.

SAFETY RACK FOR wmoow WASHERS.

APPLICATION FILED SEPT. I4 19H!- Patented 001-. 14,1919.

Z O 5 M Q 0 m 0 be constructed in various other manners and BOWLING c.CARTER, or PITTSBURGH, PENNSYLVANIA.

SAFETY-RACK FOR DOW-WASHERS.

Specification of Letters Patent.

Patented Oct. 14, 1919.

Application filed September 14, 1918. Serial No. 254,077.

is capable, when in place, of supporting great weight.

An object of the invention is to prov de means for connecting thescaffold to a window frame in such a manner that accidental displacementtherefore during the use of the rack will be prevented.

Besides the above my invention 18 distinguished in providing a scaifoldwith side "members whereby a person will be prevented from falling fromthe scaifold.

With these and other objects in view the invention will be betterunderstood from the following detailed description taken in connectionwith the accompanying drawings wherein: p

Figure 1 is a sectional vlew through a window construction showing myinvention applied thereto.

Fig. 2 is a perspective View of the scaffOldi Fig. 3 is a detail View ofone of the clamps showing the same partly in sectlon.

Fig. 4 is a top plan View of the bracket. Fig. 5 is an end elevation ofthe bracket.

Fig. 6 is a detail sectional view showing the hinge connection betweenthe side element and the bottom of the body.

At the start I wish to call attention to the fact that the deviceillustrated in the drawing is only an illustration of my invention andtherefore the construction and location of the parts as shown may bevaried at will. For instance, the body 1 of the scaffold may may be.hinged together in various other manners than shown in the drawingwherein the vertical rods 2 are looped around the frame work of thebottom 3 as indicated at 4. The vertical bars 2 are connected tohorizontal bars 5, to which maybe attached Wire mesh 6 to form sideelements 7. By hinging the side elements 7 to the bottom it will be seenthat the side elements may be folded over the bottom for minimizingspace when shipping or carrying the device. The side elements when inassembled position, may be connected by any suitable form of clamps 8.

Adjustably connected to the body 1 are the rings 9, each of whichterminates in a ball 10 engaging a socket 11. The socket 11 forms theterminal of a clamp 12 consisting of two elements 13 and 14, adjust ablyconnected together by means of a set screw 15. The clamp 14 is shaped toengage behind a window sill and is provided with a point 16 for engagingunder the windowsill as clearly shown in Fig. 1. As far as I haveproceeded it will be seen that a body of a rigid construction may bereadily supported from a window sill by these clamps, but for thepurpose of providing a more substantial construction I provide a bracket16 also having a connection with the body by means of chains 17, each ofwhich may have an adjustable connection with the body and with thebracket. For the purpose of accommodating window sills of differentsizes the bracket 16 consists of two members 18 and 19, having atelescopic connection and held in adjustable position by set screws 20.Each of the members 18 and 19 is provided with a T shaped extremity 21slidab-ly receiving one end of the L shaped arm 22 that is adapted toengage the window frame as clearly shown in Fig. 1. By referring to Fig.2 it will be seen that there are: two arms to each of the members 18 and19, one of which has an eye bolt 23 engaging the end of its associatedchain 17 while the other is provided with an eye bolt 24 slidablyreceiving an intermediate portion of the chain 17. By this arrangementit will be seen that upon pressure being applied to the chain 17 therewill be a tendency to move the arms 22 toward .each other therebypreventing accidental displacement between the arms and the windowframe.

From the foregoing description taken in connection with the accompanyingdrawings it should be apparent that I provide a device of substantialconstruction capable of standing great weight and having the advantagethat all parts are adjustable for accommodating different sized windowsand allowing the parts to be readily folded for minimizing space whencarrying the device from place to place. Broadly stating my inventionconsists of providing a collapsible body in combination with anadjustable bracket for supporting the body on the window frame in such amanner that accidental dislocation of any part is prevented, therefore Ido not desire to be limited to the exact showing in the drawing exceptin the manner set forth in the claims hereunto appended.

Having claim is:

1. In a window scafi'old, a box like body, means for detachably securingone side of said body to a window sill so as to be suspended therefrom,a bracket adapted to fit within the window frame and provided at itsopposite sides with horizontally disposed substantially U-shaped membersadapted to fit about the inner andouter faces of the frame at oppositesides thereof, and flexible members secured at their outer ends to theouter side of said body, said flexible members having their inner endssecured to the outer arms of the U-shaped members and their intermediateportions slidably condescribed my invention, what I emme nected to theinner arms of said members whereby the arms of the U-shaped members willbeforced toward each other into tight gripping engagement with the framewhen said flexible members are tensioned.

2. In a window scaffold, a box like body, means for detachably securingone side of said body to a window sill so as to be suspended therefrom,a bracket adapted to fit within the window frame transversely thereofand provided at its opposite ends with upwardly extending substantiallyT-shaped members, each of said members being provided at its upper endwith an inner and an outer element cooperating to form a horizontallydisposed and outwardly directed substantially U-shaped clamp fittingabout the sides of said frame, and flexible members secured to the outerside of said body and to the outer elements of said 'clamps, theintermediate portions of said flexible members being slidably secured tothe inner elements of the clamps.

In testimony whereof I afiix my signature.

BOWLING C. CARTER.

